Traveling grate



Aug. 4, 192s@ E; PFLEIDERER TRAVELING GRATE Filed out. 17. 1923 Patented Aug. 4, 1925 UITE:A`

smear rlrrrl@ ERNST PFLEIDERER, OF LUDYVIGSHAFEN-ON-THE-RI-IINE, GERMANY, ASSIG-NOR TO BADISCI-IE ANILIN- & SODA-FABRIK, 0F LUDWIGSI-IAFEN-ON-THE-RHINE, GER- MANY, A CORPORATION OF GERMANY.

TRAVELING GRATE.

Application filed Octoberl?, 1923. Serial No. 668,984.

To all whom t may concern.'

Be it known that I, ERNST PFLEIDERER, citizen of the German Empire, residing at Ludwigshafen-on-the-Rhine, Germany, have invented new and useful Improvements in riraveling Grates, of which the following is a specification.

This invention relates to a mechanical stoker device for use with traveling grates. As is known, when using traveling grates the fire must be stoked and any unevenness of the fuel layer must be leveled to avoid a caking of the coal and an unequal consumption giving rise to holes in the fire through which an excess of air can flow in whereby'the percentage of carbon dioxid in the combustion gases and the utilization of the heat are lowered.

According to my invention an automatic stoking device is arranged by means of which a stoker is caused to make a reciprocating or oscillating movement within the layer of fuel on the grate. The stoking device consists of' a curved pipe, through which water can be made to flow and which preferably has a zigzag or saw-like shape and which by mechanical drive is caused to make an oscillating movement across the traveling direction of the grate in the layer of fuel on the grate.

The novel features of the invention are more fully described in the following` specification and claims and illustrated in the accompanying drawing in which Fig. l represents a vertical section of a grate with stoker.

Fig. 2 is a longitudinal section of the same.

Fig. 3 is a side elevation of a stoker.

A pipe c through which water is flowing is arranged above the traveling grate a over the whole breadth thereof and across its traveling direction. The said pipe may consist of a straight upper portion and a return or lower portion of a zigzag or sawlike shape or contour and the said zigzag, or saw-like winding may be arranged horizontally or vertically. The two ends of the pipe are fastened in the piston rl which is provided with two corresponding borings and is slidable in a guide e. The piston is operated by a crank shaft 7, preferably so ,that the stroke is about the distance of the saw-like teeth of the pipe. The other end of the stoker may be supported in a block slidable in a recess in the opposite wall of the furnace. Water is led through the pipe to cool the same and as the water is heated on its way through the pipe, it may be taken from the feed water piping and after its passage through the stoker be led into the boiler, or it may be led back into the water purification tank. The connection between the cooling water supply pipe and the stoker pipe is made of flexible tubes t and t.

The stoker' may be arranged at any part of the grate where stoking is desired, butthe most suitable place is where the distillation or degassing of the coal is about nearly complete. The stoker may also be operated in any other suitable manner.

The invention results in a considerable reduction of the cost of attendance, as a fireman can now supervise a great number of furnaces, and the grates are more efficient and may be of smaller size for the same capacity and also the efficiency of the combustion is automatically kept at a high degree and independent of the fireman.

'Now what l claim is:

1. An improvement with traveling grates consisting in a mechanical stoker arranged in the layer of fuel on the grate and consisting of a curved pipe through which a l cooling' fiuid can be made to flow and which can be given an oscillating movement across the traveling direction of the grate by mechanical drive.

2. An improvement with traveling grates consisting in a mechanical stoker arranged over the grate and in the layer of fuel thereon and consisting of a pipe through which water can be made to flow and which has a zigzag shape and can be given an oscillating movement across the traveling direction of the grate by mechanical drive.

3. An improvement Withrtraveling grates lating movement through the layer of fuel consisting in a mechanical Stoker arranged by mechanically driving the sald piston. across the grate and in the layer 0f fuel In testimony whereof I have hereunto set thereon and consisting of a pipe the ends my hando Which are fastened in a piston with ERNST PFLEIDERER. horings so that Water can be made to ioW Witnesses:

C. C. L. B. WYLES,

through the pipe, Which pipe has a saw-like P. A. WILLIAMS.

shape and @an be caused to make an oscil- 

